The greatest inventions are those which most directly meet the wants of mankind.
长期来看，风险与收益相关，但短期内未必如此。
游戏是儿童的工作。
Success is not the key to happiness. Happiness is the key to success
A long habit of not thinking a thing wrong, gives it a superficial appearance of being right.
The truth about the world, he said, is that anything is possible. Had you not seen it all from birth and thereby bled it of its strangeness it would appear to you for what it is, a hat trick in a medicine show, a fevered dream, a trance bepopulate with chimeras having neither analogue nor precedent, an itinerant carnival, a migratory tentshow whose ultimate destination after many a pitch in many a mudded field is unspeakable and calamitous beyond reckoning.
有两种自由——一种虚伪的自由，一个人可以为所欲为；一种真正的自由，一个人可以为所应为。